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Small Bumps on Young Red Oak Bark: Fungal or Water‑Related?

The Observation

A 4‑year‑old red oak planted last year has a 5″ patch of small bumps on bark. No other symptoms.

Expert Guess

Possibly a fungal disease favored by excess moisture. Oaks dislike wet feet.

Suggestions

Check drainage; reduce watering if area stays wet.
Try a labeled fungicide.
Contact local agriculture department for regional advice.

Plant Diseases: Young Oak Vertical Bark Cracks: Stress Injury, Consider Replanting; Plum Tree Base Bumps: Normal Callus or Canker?; Brown Bumps on Pin Oak Leaves: Harmless Leaf Galls; Horned Oak Galls on Pin Oak: Serious but Manageable; Calculating Square Footage of an Irregular 9-Sided Area; Oak Trunk Rot: After Removing Soft Wood, Now What?; Large Basal Rot in Oak: Structural Risk and Next Steps; Oak Leaf Galls: Identifying Those Colorful Bumps on Your Tree; Borer and Decay in Old Oak Trunk; Oak Trunk Sunken Area: Old Injury Compartmentalization, Not Active Disease

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